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Traversing Nodes in the tree level order and summing up value as you visit. Additional Q required to store each level.
- Sindhuja.Narasimhan April 01, 2012Queue<Node> queue = new LinkedList();
Node flagNode = new Node(00);
int avg = 0;
int sum =0;
int count = 0;
queue.add(rootNode);
queue.add(flagNode);
while (!queue.isEmpty()) {
Node node = queue.poll();
// System.out.print("While Condition Values "+node.value);
if (node != flagNode) {
sum = sum + node.value;
System.out.print(node.value+ " ");
//System.out.println("Sum"+sum);
count++;
if (node.leftChild != null) {
queue.add(node.leftChild);
//sum = sum + node.leftChild.value;
}
if (node.rightChild != null) {
queue.add(node.rightChild);
// sum = sum + node.rightChild.value;
}
} else if (!queue.isEmpty()) {
// System.out.println("Adding Flag");
queue.add(flagNode);
}
}
System.out.print("Sum"+sum);
avg = sum / count;
System.out.print("Avg"+avg);
}